Two new species of silica-scaled chrysophytes (Chrysophyceae, Synurales) Mallomonas kicherica and M. sibirica water bodies of Eastern Siberia, Russia Author Bessudova, Anna 0000-0002-6569-0052 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya, Irkutsk 664033, Russia & annabessudova @ mail. ru; https: // orcid. org / 0000 - 0002 - 6569 - 0052 annabessudova@mail.ru Author Firsova, Alena D. 0000-0001-8668-667X Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya, Irkutsk 664033, Russia & firsova @ lin. irk. ru; https: // orcid. org / 0000 - 0001 - 8668 - 667 X firsova@lin.irk.ru Author Tomberg, Irina V. 0000-0001-5415-9867 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya, Irkutsk 664033, Russia & kaktus @ lin. irk. ru; https: // orcid. org / 0000 - 0001 - 5415 - 9867 kaktus@lin.irk.ru Author Bayramova, Elvira 0000-0001-7433-1580 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya, Irkutsk 664033, Russia & bairamovaelvira @ gmail. com; https: // orcid. org / 0000 - 0001 - 7433 - 1580 bairamovaelvira@gmail.com Author Hilkhanova, Diana 0009-0005-2479-5869 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya, Irkutsk 664033, Russia & diana. khilkhanova @ mail. ru; https: // orcid. org / 0009 - 0005 - 2479 - 5869 diana.khilkhanova@mail.ru Author Bedoshvili, Yekaterina D. 0000-0001-9620-5745 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya, Irkutsk 664033, Russia & bedoshvilied @ list. ru; https: // orcid. org / 0000 - 0001 - 9620 - 5745 bedoshvilied@list.ru Author Bashenkhaeva, Maria 0000-0002-2551-5153 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya, Irkutsk 664033, Russia & maria. bashenkhaeva @ gmail. com; https: // orcid. org / 0000 - 0002 - 2551 - 5153 maria.bashenkhaeva@gmail.com Author Zakharova, Lyubov I. Kopyrina Yulia R. Author Likhoshway, Yelena V. 0000-0002-2432-9260 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya, Irkutsk 664033, Russia & likhoshway @ mail. ru; https: // orcid. org / 0000 - 0002 - 2432 - 9260 likhoshway@mail.ru text Phytotaxa 2023 2023-10-12 620 1 59 69 http://dx.doi.org/10.11646/phytotaxa.620.1.5 journal article 273181 10.11646/phytotaxa.620.1.5 fa9f40b9-02d9-42e5-965c-8283f44af289 1179-3163 10015521

TABLE 1. Ecological conditions and species distribution records for M. kicherica and M. sibirica. Site numbers correspond to those in Figure 1.

Site No.	Date	Coordinates	Sampling depth (m)	Т, ° С	pH	O, mg / L-1 2	EC μS ̛ сm− 1	Sampling features	References
Mixing zone of the Yenisei River and the Kara Sea
1	01.09.2009	73°04ʹ57″N, 79°58ʹ49″E	0	10.2	8.03	10.07	6560	Salinity: 3.8‰
2	04.09.2009	72°38ʹ48″N, 80°08ʹ09″E	0	9.9	8.11	10.92	6060	Salinity: 3‰	Bessudova et al. 2014, Firsova et al. 2015
3	05.09.2009	71°46ʹ08″N, 82°42ʹ23″E	0	9.6	8.01	10.71	6020	Salinity: 3.12‰
4	15.09.2009	71°46ʹ08″N, 82°42ʹ23″E	0	9.2	7.95	10.99	704	Salinity: 0.4‰
Mouth of the Kichera River
5	29.07.2022	55°43′55″N, 109°32′24″E	0	16.9	8.04	9.92	112.3	-	Current study
Lake Baikal
6	7.06.2021	52°44′37″N 107°38′48″E	0–25	2.5	-	-	-	-	Current study
7	10.06.2021	55°20′58″N 109°14′38″E	0–25	2.3	-	-	-	-
Lake Labynkyr
8	05.2016	62°27′14″N, 143°37′26″E	0–5	2.6	9.34	-	45.72	Snow cover depth: 5 cm Ice thickness: 111 cm
9	04.2016	62°33′33″N 143°36′27″E	Ice bottom surface	0.4	7.48	-	50.01	Snow cover depth: 35 cm Ice thickness: 86 cm	Zakharova et al.
9	05.2016	62°27′14″N, 143°37′26″E	Ice bottom surface	1.3	6.97	9.6	51.7	Snow cover depth: 0.5 cm Ice thickness: 86 cm	2022
9	06.2017	62°27′14″N, 143°37′26″E	0–5	5.6	6.98	8.4	41.07	Snow cover depth: 1 cm Ice thickness: 86 cm
Lake Ulu
10	24.04.2021	63°20ʹ9″N, 141°3ʹ54″E	0–5	1.5	7.76	-	64	Snow cover depth: 31 cm Ice thickness: 120 cm	Current study
10	17.04.2022	63°20ʹ9″N, 141°3ʹ54″E	0–5	1.6	-	-	-	Snow cover depth: 35 cm Ice thickness: 94 cm
Lake Vorota
11	05.2016	62°24′45″N, 144°06′49″E	0–5	3.1	8.82	-	51.21	Snow cover depth: 1 cm Ice thickness: 100 cm	Zakharova et al.
11	06.2017	62°24′45″N, 144°06′49″E	Ice bottom surface	3.2	7.21	-	54.75	Snow cover depth: 5 cm Ice thickness: 110 cm	2022